400g

O-band transmission is a foundational technology for high-speed optical communications and data center interconnects. In this post we're looking at FiberLabs' latest flagship amplifiers - the Praseodymium-Doped Fiber Amplifier (PDFA) and Bismuth-Doped Fiber Amplifier (BDFA) - that bring new capacity in O-band WDM signal amplification.

As organisations seek out quantum-resistant security solutions capable of enduring both current and future challenges, Quantum Key Distribution (QKD) has emerged as a groundbreaking technology that harnesses the fundamental principles of quantum physics to establish virtually unbreakable encryption systems. This article delves into the technical aspects of QKD and explores how its integration with PacketLight’s Dense Wavelength Division Multiplexing (DWDM) and Optical Transport Network (OTN) devices is revolutionising network security landscapes.

As data centres, high-speed, high-density fibre networks expand to accommodate escalating demands, network engineers encounter heightened pressure to establish robust fibre connections with utmost speed and precision. One-cord reference testing has emerged as a pivotal methodology to address these challenges effectively.

The world of telecommunications and data infrastructure is changing fast, and testing equipment needs to keep up with AI-driven networks' growing needs. EXFO, a top player in communications industry testing, has just launched a game-changing product: the EXFO BA-1600 1.6T Bit Analyser. This tool is the first in the industry to offer a full lab-to-fabrication testing answer for 1.6T technology.

PacketLight Networks and Fujitsu Optical Components announced a significant breakthrough in optical networking technology with the successful transport of mixed 100GbE and 400GbE data services over an 800G wavelength. Completed in February 2025, this achievement marks a milestone in high-capacity optical transport and demonstrates the companies' commitment to developing next-generation networking solutions that address the growing bandwidth demands of AI applications, cloud computing, and data-intensive workloads.

PacketLight Networks has unveiled its PL-8000M platform - a powerful 2 x 800G muxponder designed to meet the escalating capacity demands of AI-driven infrastructure, hyperscale cloud environments, and enterprise networks requiring multi-terabit connectivity.

How EXFO's innovative multi-fibre testing solutions transformed the daunting challenges of a trailblazing hyperscaler into smooth sailing. Learn about the role of PXM/LXM and FIP-500 in achieving massive AI data centre rollout targets.

Hyperscalers face significant challenges as they strive to meet the escalating demands of artificial intelligence, cloud computing, and a data-driven world. This post examines some of the challenges for hyperscalers in 2025 and explores new test and monitoring solutions from EXFO, along with interoperable transceiver alternatives from FLEXOPTIX.

Recently, during the Revolutionising Optical Transport Networks webinar, Andrea Guglielmi, Business Development Manager at EXFO, provided insightful perspectives on the evolution of IP over DWDM, interoperability challenges, and the shaping of the future of high-speed networking through standardisation efforts.

The rapid advancement of Artificial Intelligence (AI) is driving unprecedented transformation in data center technologies, particularly in high-performance transceivers. As AI workloads grow exponentially, the need for faster, more efficient data transmission has become critical. This blog post explores the latest developments in Photonic Integrated Circuit (PIC)-based transceivers and examines Nvidia's cutting-edge server architecture requirements for these components as of 2025.

Being an early adopter of high Ethernet rates (e.g., 800G) and next-gen coherent optic technologies (800ZR/ZR+/LR) comes with unique challenges. It requires innovative tools and techniques to effectively implement these new specifications. In this blog post, we’ll explore insights shared in the September 2024 webinar moderated by David Rodgers, Business Development Manager at EXFO, along with experts from EXFO and Lumentum. They provide an industry overview of these emerging technologies and strategies to overcome the associated challenges.

In today’s digital world, service providers face challenges in providing high-speed and reliable connectivity. This blog post explores the transformation of metro networks and the emergence of the “Digital Service Provider” model, focussing on advanced technologies and testing methodologies for optimal network performance.

EXFO is set to demonstrate their latest advancements in fiber optic electrical and optical testing at OFC 2024. The company will showcase automated PIC testing and complete electrical-to-optical transceiver testing capabilities.

Fully embracing the 400G Ethernet revolution, network and data centre operators are collaborating with equipment manufacturers to validate 400G Ethernet-capable network elements in their laboratories. This rigorous testing ensures operators meet service level agreements whilst reducing operational costs and enhancing profitability.

Luna is home to cutting-edge test and control solutions custom-made to meet the specific needs of quantum computing, quantum communications, and quantum sensing. This blog post gives a snapshot of the first half of the session laying the groundwork to understand Luna's breakthroughs and how they apply across the quantum tech scene.

The rapid growth of optical network traffic has created an urgent need for solutions that maximise fibre utilisation and reduce transmission costs. Coherent optical transmission technology has emerged as a key solution, with capabilities set to advance through future innovations.

As demand for data centre interconnect (DCI) grows and edge computing emerges, the transition from legacy Optical Transport Network (OTN) systems to Open Line Systems (OLS) powered by 400ZR technology is paramount. This shift is essential for delivering high-speed, scalable transport.